European gypsy moth caterpillars are eating their way through parts of southern Ontario and Quebec in a regular cycle that sees their numbers explode every seven to 10 years. Here's what you need to know about their life cycle and how you can help control their spread: https://www.theglobeandmail.com/canada/article-time-will-ease-ontarios-gypsy-moth-outbreak-biologist-says/ | The Globe and Mail